Swivel for rock-drills.



V 0 9 7 1 G E D D E T N E T A P E R 0 M. E Z I S A QM SWIVEL FOR ROCK DRILLS.

APPLIOATION FILED MAY 14, 1ao7.

2 SHEETSSHEET 1.

PATEZEHED DEC. 17. 1907.

SIZBMORE.

WIVEL FCR ROCK DRILLS.

AYYLICATIQN FILED MAY 14, 1907.

2 SHEETS-SHEET 2 Sam/waif] qwi/b/www when s rains PATENT SAMUEL ALEXANDER siznironn, or LEADWOOD, assets;

SWIVEL FOR RG'CK-DBILLS.

' specification of Letters Patent.

' Application filed Hay 14.1907. Serial No. 873%23- ticularly to'the so-called water heads or.

swivels, employedin connection with diain other analogous relations. r

The principal object is-to rovide a novel and simple structure ofthe a ove character, wherein the friction between the relatively rotatable parts or members is reduced to a minimum without. affecting thenecessary mond drills, is capable of advantageous use.

- .tightness of the joint between them, said 'at-one side of the coupling.

structure not onlyeliminating the friction due to. the longitu'dinalst'rain' between the .'members, but also avoiding to a very material degree, the friction caused .by the lateral strain due to the weight of the hose pipe While the invention may be embodied in a -number of ways, the referred form of structure is, illustrated in t e accompanying drawings, wherein i Figure 1 is a side. elevation of the swivel.

' Fig. 2 is a longitudinal sectional view therethrough. Fig. 3 is a cross sectional view on the line 33 of Fig. 2. Fig. 4 is a cross sectional view on the line 4-4 of Fig. 2. Fig.

5 isa cross sectional view on the line 5-5 of- Fig. 2. Fi 6 is a cross sectional view on the Similar reference numerals" designate corresponding parts-in all the figures of the drawings. g In the embodiment illustrated, a tubular member 7,is employed that is provided with a head, comprising sections 8 and 9. The

section Sismadeintcgr'al with the member' 7, and has a socket 10, the inner or lower 3 and Hot which is beveled, as shown. The

5 of a pipehavihg longitudinal bore 12 of the member communicates with the central portion of the socket.

A supply member 13, with which the member 7 is rotatably associated, is in the form a bore 14 therethrough communicating with the bore1'2 of the member 7. Said member 13 is provided at its lowerend with an enl'ar ement 15 that is fitted in the socket 5,; an has its lower end Pate 17,1907. H

taperedto correspond to inner 611d 11 of said socket.

Thehead section 9 surrounds the member 13, and has a plug 16 that is threaded into the upper portion of the socket 12 above the enlargement 15; An antifriction bearing is interposed between 4 said enlargement. and the inner end of the plug 16. In the present embodiment, this bearing consists of an anr I uilar series of balls 17 interposed between a B pair of bearing plates 18, the upper late eing associated "with the lower end 0 the 'plug 16, the lower plate bearing against the upper side of the enlargement 15,,saigl lower.

atehaving an annular channel or race 19..

Eheplug or head section 9 is of the same. cross sectional area as the'section 8, and

these two sections are an lar in'crosssec'- tion in order to permit t eir bein readily turned by a spanner or wrench. T e'upper portion of the section 9 is exteriorly threaded, as shown at20. This section is furthermore provided in its upperportion a socket 21, and in the socket is formed another antifrioti on bearing, comprising an annular series of upright rollers 22 disposed longitudinall of and surrounding the member 13,- which passes through the socket. A hearing sleeve 23 may be disposed outside the rollers.

The rollers are heldin place by a packing gland comprising a. cup 24, surrounding the member 13, and screwed upon the threaded portion 20 of the section 9. NVithin this cu are located'one or more disks, as 25, whic rest upon the upper end of the section; EX- tonding across the bore 12 of the lower memher 7 and below the bearings is a stop pin 26, which permits the free passage of fluid,

but prohibits the passage of the balls, should the same from any cause, enter the bore 12.

It will be observed that in this structure, the bearing surfaces of the balls and rollers are disposed in angular relation, that is to say, the bearing surfaces of the balls are dis-Q posed transversely of the axis of rotation. of the members, while the bearing surfaces of the rollers are located longitudinally there- I of.. It will also be observed that sufficient room is left between the member. 13 and the arts through which it passes to. permit slight ateral play thereof, so thatupo'n the lateral movement ofthe member 13,.it will be' brought to bear against the rollers. this arrangement, therefore, the longitudinal strain between'the members is transmitted through the ball bearings, while the lateral I strain due to the weight of the hose pipe upon the member 13 is brought against the rollers. Therefore it will be evident that friction between the relatively rotatable members is reduced to a minimum, eliminating very considerably the wearing of the parts. At the same time, the structure is exceedingly simple, as will be evident, and the tightness of the joint is not materially affected. The use of the stop pin is advantageous, for should" the parts break to release the rollers, they will not pass downwardly through the bore into the drill.

From the foregoing, it isthought that the construction, operation andmany advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to Without departing from the spirit or'sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a swivel of the character described, the combination with relatively rotatable members, of an antifriction bearing interosedbetweenthe members for -takin the ongitudinal'strain betweenthem, an .&In-

I the combination with relatively rotatable members, of an antilriction bearing comprising balls that are interposed between the members for taking the longitudinal strain between them, and another antiiriction hearing comprising an annular series of longitudinally disposed rollers interposed between the members and receiving the lateral strain between them.

4. In a swivel oi the character described,

the combination with relatively rotatable members, of an antilriction bearing interposed. between the members for taking the longitudinal strain between them, and 'another antiiriction bearing interposed between the members and receiving the lateral strain between said members, said bearings having their hearing portions disposed in angular relation.

eraser 5. In a swivel of the character described,

the combination with relatively rotatablr members, of an antifriction bearing interposed between the members and having its bearing surfacesdisposed transversely of their axis of rotationyand another antiiriction bearing interposed between the members and having, their bearing surfaces disposedlongitudinally of said members.

6. Ina swivel of the character-described,-

the combination with relatively rotatable t'ubhllar members disposed in substantial alinement, one of said members having a head that surrounds the other, of an antifriction bearing interposed between the head and said other member, and havingbearin surfaces disposed transversely thereof, and another antifriction br-iaring interposed between the head and other bearing member and havin its bearing surfaces disposed longitudina ly thereof.

7. In a swivel of the character described, the combination with relatively rotatable tubular members, one of said members having a head thatsurrounds the other, of a ball.

bearing interposed. between the head and said other member and having bearing surfaces disposed transversely thereof, a roller bearing interposed between the head and other memher, said rollers being disposed longitudinally thereof. a

8. In a swivel of the character described. the combination with a tubular member hav- 'ing a socket, of another tubular member having an enlarged terminal portion fitted in the socket, a plug threaded into the socket at one end of the enlargement and having an angular portion and an extcriorly threaded portion, a ball bearing interposed between theinner portion of the plug, and the enlargement, and a packing gland including a cup threaded on the exterior of the plug.

9. In a swivel of the character described,.

the combination with a tubular member having a head, of another tubular member journaled in the head and communicating with the first mentioned member, and an antifriction bearing interposed between the head and portion of the member located therein and having its bearing surfaces disposed longitudinally thereof.

10. In a swivel of the character described, the combination with a tubular member having a head, of another tubular member journaled in the head and communicating with the first mentioned member, and rollers in terposed between the head and ertion of the member located therein, said r0 lers being disposed longitudinally of the members.

11. In a swivel of the character described, the combination with a tubular member having a head that is provided with a socket, of a second member rotatably connected to the first member and passing throu h the socket, a plurality of rollers located in t 1e socket and socket.

. meeii's for the bearing and a second besrio ere,

her, end means for r the rollers in the it the combination ing ahead that is provide s. socket, of is second member rotetshl connected to the firstmember and seeing through the socket, a hirelity of rollers loccteri iii socket one disposed longitudinally of thc second member, and epscking gleiirl secured to the "head and constituting rcteiiiisg means fertile rollers.

13. in a swivel of the character described,

sections]. heed, or" at second. member having at roteteole bearing in one section of the heed, the other'scction constituting retaining located in said other section and comprising antifriction devices surrounding the second member. l f Y 14. Inc swivel of the character described,

the combination with s member having e sec tionel head, of e second member her ing e rotatable bearing in one section of the head,

the other section constituting retaining means for the hearing second hearing. located in said other section and coniprisiiig' sntifriction devices surrounding the second member, and e pecking-gland secured to ssicl other section and constituting retaining means for the entifiiction devices 15. In s, swivel of the cheracter described, I the combination with e member he-vingfie head section provided with a socket, of second member rotetehly journeleil in the socket, sntifriction moons loceted in the socket, another seotiori secured to the first section, and he ring e socket through which the second-member rotstehly cntiiriction ineons' located in the socket of the second section.

16. in s-s'wivel of the character described, the combination s ziiember having it section provided lth csociiet, of e second member rototchly joiiriielecl in the on Ali cured in the socks rslooeteri iii socket the second section, and retaining mess-s to the eecozrc" 37. in eswivcl o'f'tll cilia-rec the combination with e tubule-r mcmher he"?- ing o hesdsectioo that is provi (l with 9 socket, of e second tuooler iiiemhcr serving an enlarged portion rotctebly mounted in the socket, ssiil members lacing in communication, a plug section (icteci eoly fitted in the socket of the hood. section, ball bearings iiiterposcd between the plug section endthe enlarged portion of the second tubular inemher, plug section also herring s socket through which the second tubular member rotstehly posses, rollers surrounding the secend member and located in the socket of the plug section, said rollers being disposed longitudinelly of the members, and epsclriiig gland detechcbly secured to the plug section and constituting a closure for the socket thereof.

18. in e swivel of the cherecter described, the combination with e lower tubular membor, of on upper tubular-member rototeoly connected thereto, entifric'tion bearing (lo; vices interposed between portions, of the members, end. it stop extending across the bore of the lower member below said critiiriction devices. I

19/111 e swiveloi the character described, the combination with at, lower tubular member, of an upper tubular member rotstohly connected thereto, anti-friction bells i1iterposed betweenportions of the members, and a stop pin extending across the hereof the lower member below said entifrictioii bells.

In testimony, the-t1 cleim the foregoing as my own, i have hereto efiixed my signature in thepresence of two Witnesses SAMUEL ALEX ililli SlZillllORE.

fii'tr esscs JASPER NEWTON Buses, 71M! MURRAY.

'socflet, entirriotion HIGBJLS located in the scribed, 

